God's mighty promises to us who abide in Christ have been mostly unfulfilled because of strongholds in the hearts of believers. In this book we see key features that God created for the spiritual heart, especially its unconscious ways to protect itself against anything it perceives to be a danger. This specifically includes God's work in the heart until it really learns that He can be trusted. This helps us see how the enemy of mankind has manipulated us out of most of our boundless power of staying in Christ, and see how experiences and demons can create highly protected strongholds that work against people receiving God's great love and power in Jesus. We also see how to destroy a stronghold in oneself and in other people who want to be free. To destroy it, we need a good preparation and good follow-up to Jesus' work of deliverance: all help the freedom to last. Therefore this book shows the true nature of spiritual warfare, which comes with moving into God's powerful provisions for us in Christ.